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Developing High Dielectric Strength Alumina for Spark Plugs
Technical Paper
2019-01-1192
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Engine downsizing and widely adopted Gasoline Turbo Direct injection (GTDi) technology has led to harsher application condition for spark plugs, which demand insulators with higher dielectric strength to meet the new challenges in modern engine platform. To improve conventional alumina insulators, the influences of material properties, such as porosity, grain size, glass chemistry and surface finish, on dielectric strength performance are studied. It is also found that, the manufacturing process can greatly impact the final performance. Hence, the effort in optimizing process variables will be discussed and the performance of resultant Autolite HD95 ceramic will be reviewed against those of several leading manufacturers.
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Zheng, J., Overton, D., and Treier, P., "Developing High Dielectric Strength Alumina for Spark Plugs," SAE Technical Paper 2019-01-1192, 2019, https://doi.org/10.4271/2019-01-1192.Data Sets - Support Documents
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References
- Zheng , J. and Treier , P. 2011
- Munro , R. Evaluated Material Properties for a Sintered α-Alumina J. Am. Ceram. Soc. 80 1919 1928 1997
- Auerkari P. 1996 1 26
- Islam , R.A. , Chan , Y.C. , and Islam , M.F. Structure-Property Relationship in High-Tension Ceramic Insulator Fired at High Temperature Mat. Sci. and Eng. B106 132 140 2004
- Riddle , F. Ceramic Spark-Plug Insulators J. Am. Ceram. Soc. 32 333 346 1949
- Malec , D. , Bley , V. , Talbi , F. , and Lalam , F. Contribution to the Understanding of the Relationship between Mechanical and Dielectric Strengths of Alumina J. Eur. Ceram. Soc. 30 3117 3123 2010
- Gerson , R. and Mashall , T.C. Dielectric Breakdown of Porous Ceramics J. Applied Physics 30 1650 1653 2004
- Kishimoto , A. , Koumoto , K. , and Yanagida , H. Comparison of Mechanical and Dielectric Strength Distributions for Variously Surface Finished Titanium Dioxide Ceramics J. Am. Ceram. Soc. 72 1373 1376 1989
- Kishimoto , A. , Endo , K. , Nakamura , Y. , Motohira , N. , and Yanagida , H. Effect of High Voltage Screening on Strength Distribution for Titanium Dioxide Ceramics J. Am Ceram. Soc. 78 2248 2250 1995
- Liebault , J. , Vallayer , J. , Goeuriot , D. , Treheux , D. , and Thevenot , F. How the Trapping of Charges Can Explain the Dielectric Breakdown Performance of Alumina Ceramics J. Eur. Ceram. Soc. 30 805 817 2010
- Touzin , M. , Goeuriot , D. , Fitting , H.J. , Guerret-Piécourt , C. et al. Relationships between Dielectric Breakdown Resistance and Charge Transport in Alumina Materials J. Eur. Ceram. Soc. 27 1193 1197 2007
- Youshimura , M. and Bowen , H.K. Electrical Breakdown Strength of Alumina at High Temperatures J. Am. Ceram. Soc. 64 404 410 1981
- Zheng J. , Treier P. 2011
- Munro , R. Evaluated Material Properties for a Sintered α-Alumina J. Am. Ceram. Soc. 80 1919 1928 1997
- Auerkari , P. 1996 1 26
- Islam , R.A. , Chan , Y.C. , and Islam , M.F. Structure-Property Relationship in High-Tension Ceramic Insulator Fired at High Temperature Mat. Sci. and Eng. B106 132 140 2004
- Riddle , F. Ceramic Spark-Plug Insulators J. Am. Ceram. Soc. 32 333 346 1949
- Malec , D. , Bley , V. , Talbi , F. , and Lalam , F. Contribution to the Understanding of the Relationship between Mechanical and Dielectric Strengths of Alumina J. Eur. Ceram. Soc. 30 3117 3123 2010
- Gerson , R. and Mashall , T.C. Dielectric Breakdown of Porous Ceramics J. Applied Physics 30 1650 1653 2004
- Kishimoto , A. , Koumoto , K. , and Yanagida , H. Comparison of Mechanical and Dielectric Strength Distributions for Variously Surface Finished Titanium Dioxide Ceramics J. Am. Ceram. Soc. 72 1373 1376 1989
- Kishimoto , A. , Endo , K. , Nakamura , Y. , Motohira , N. , and Yanagida , H. Effect of High Voltage Screening on Strength Distribution for Titanium Dioxide Ceramics J. Am Ceram. Soc. 78 2248 2250 1995
- Liebault , J. , Vallayer , J. , Goeuriot , D. , Treheux , D. , and Thevenot , F. How the Trapping of Charges Can Explain the Dielectric Breakdown Performance of Alumina Ceramics J. Eur. Ceram. Soc. 30 805 817 2010
- Touzin , M. , Goeuriot , D. , Fitting , H.J. , Guerret-Piécourt , C. et al. Relationships between Dielectric Breakdown Resistance and Charge Transport in Alumina Materials J. Eur. Ceram. Soc. 27 1193 1197 2007
- Youshimura , M. and Bowen , H.K. Electrical Breakdown Strength of Alumina at High Temperatures J. Am. Ceram. Soc. 64 404 410 1981